<?php 
   $str = base64_decode($_GET['p']);
   $arr = explode('+' , $str);
   $time = time();
   if( $_GET['code'] !== md5('asd34'.$_GET['time']) ){
        echo '你想篡改时间啊';
        exit;
   }
   if(($time-$_GET['time'])<10*1){
        if( $arr[1] == md5('lili+123456') ){
            echo '允许修改密码';
        } else {
            echo '不准!!';
        }
   } else {
        echo '该链接已过期';
   }


 ?>